US 12,262,582 B2
Display module having magnetic attraction structure and bonding portions and display device
Zifeng Wang, Beijing (CN); Lei Cao, Beijing (CN); and Yao Zhang, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/612,288
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Nov. 17, 2020, PCT No. PCT/CN2020/129408
§ 371(c)(1), (2) Date Nov. 18, 2021,
PCT Pub. No. WO2021/104109, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201922054126.8 (CN), filed on Nov. 25, 2019.
Prior Publication US 2022/0223819 A1, Jul. 14, 2022
Int. Cl. H10K 50/84 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/84 (2023.02) [H10K 2102/311 (2023.02)] 13 Claims
OG exemplary drawing
 
1. A display module, comprising:
a display panel having a light exit surface and a back surface opposite to the light exit surface;
a backplane disposed at a side of the display panel away from the light exit surface;
a magnetic attraction structure disposed between the display panel and the backplane, the magnetic attraction structure being configured to attract and fix the display panel and the backplane; and
a plurality of bonding portions disposed between the display panel and the backplane, wherein the plurality of bonding portions are spaced apart, and are configured to bond the display panel to the backplane;
wherein the backplane is provided with a plurality of through holes, and each bonding portion is disposed at an edge of a corresponding through hole close to the display panel;
orthographic projection of the magnetic attraction structure on the display panel does not overlap with orthographic projections of the plurality of bonding portions on the display panel;
the display module has a central region and an edge region surrounding the central region; the magnetic attraction structure includes at least one first magnetic attraction component and at least one second magnetic attraction component, the at least one first magnetic attraction component is disposed in the central region, and the at least one second magnetic attraction component is disposed in the edge region; and a magnetic attraction force of the at least one first magnetic attraction component is less than a magnetic attraction force of the at least one second magnetic attraction component;
the at least one second magnetic attraction component includes a plurality of second magnetic attraction components that are spaced apart, and a material of the plurality of second magnetic attraction components includes metal;
the edge region includes two first edge sub-regions disposed on two opposite sides of the central region in a first direction and two second edge sub-regions disposed on two opposite sides of the central region in a second direction; the first direction is a direction in which a side of the display panel extends, the second direction is a direction in which another side of the display panel extends, and the side and the another side are two adjacent sides of the display panel;
the plurality of second magnetic attraction components are divided into a first group of magnetic attraction components and a second group of magnetic attraction components, and each of the first group of magnetic attraction components and the second group of magnetic attraction components includes second magnetic attraction components; the first group of magnetic attraction components is disposed in the two first edge sub-regions, and the second group of magnetic attraction components is disposed in the two second edge sub-regions;
the backplane is a metal backplane; and the first group of magnetic attraction components is fixedly disposed on the display panel, and the second group of magnetic attraction components is fixedly disposed on the backplane; and
the display module further includes:
two auxiliary magnetic attraction components, one of the two auxiliary magnetic attraction components being disposed in one second edge sub-region, and another of the two auxiliary magnetic attraction components being disposed in another second edge sub-region; and
a second bonding layer having two bonding surfaces, one of the two bonding surfaces being bonded to the display panel, and another of the two bonding surfaces being bonded to the two auxiliary magnetic attraction components,
wherein orthogonal projections, on the display panel, of all second magnetic attraction components in the second group of magnetic attraction components in each second edge sub-region are within an orthogonal projection, on the display panel, of an auxiliary magnetic attraction component in the second edge sub-region; and the auxiliary magnetic attraction component is configured to be magnetically attracted to all second magnetic attraction components in the second edge sub-region.